Silo Mountain, Washington

Prominence: 2430 ft, 741 m

Elevation: 4150 feet, 1265 meters

True Isolation: 5.61 mi, 9.03 km
Elevation Info:NAVD88 Elevation: 4154 ft / 1266 m
Alternate Name(s)Big Haystack
Latitude/Longitude (WGS84)48° 26' 4'' N, 122° 4' 40'' W
48.434499, -122.077759 (Dec Deg)
568215 E 5365006 N, Zone 10 (UTM)
CountryUnited States
County/Second Level RegionSkagit

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Other Web Sites
     Silo Mountain (Big Haystack) at
     Silo Mountain at

Weather and Snow
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Lists that contain Silo Mountain:
     Washington State Peaks with 2000 feet of Prominence (Rank #89)
     Washington State Top 200 by Prominence (Rank #89)

Selected Trip Reports from this site:
     2007-11-24 by Eric Noel
     2010-08-07 by Ken Russell
     2013-03-17 by James Barlow (GPS Track)
     2013-11-23 by Stu Frink
     2014-10-04 by George Burgess (GPS Track)

View ascents of peak by registered members (20 total)

Nearby Peak Searches:
     Radius Search - Nearest Peaks to Silo Mountain
     Elevation Ladder from Silo Mountain
     Prominence Ladder from Silo Mountain

Google Maps Dynamic Map

 Silo Mountain    Other Peaks
Click Here for a Full Screen Map
Web Map LinksAcme Mapper   MyTopo   Gmap4   TopoQuest
Bing Maps   Google Maps
ProminenceKey Col Page  (Detailed prominence information)
  Clean Prominence: 2430 ft/741 m
  Optimistic Prominence: 2470 ft/753 m
  Key Col: 1720 ft/524 m
Isolation5.61 mi/9.03 km
Nearest Higher Neighbor in the PBC database:
    Coal Mountain  (E)
Isolation Limit Point: 48° 25' 54'' N, 121° 57' 21'' W
    ILP Map Links:
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RangesContinent: North America
Range2: Pacific Ranges
Range3: Cascade Range
Range4: North Cascades
Range5: Mountain Loop Area
Range6: Cultus Mountains (Highest Point)
Drainage BasinsSkagit
Puget Sound
Pacific Ocean
OwnershipLand: Logging Company Land in Washington
Topo MapHaystack Mountain O48122d1 1:24,000
Data Source1:25,000 (or larger) Topographic Survey Map

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